Return and Risk Basics5 min
This section covers the foundational formulas for calculating investment performance and volatility. The holding period return is the primary metric for past performance, while arithmetic and geometric means provide different perspectives on average returns over time. Risk is quantified through standard deviation and analyzed in the context of portfolio diversification using correlation and covariance.

Key Points

  • Holding period return includes price change and dividends.
  • Geometric mean accounts for compounding.
  • Correlation is derived from covariance and standard deviations.
  • Portfolio standard deviation depends on asset weights, variances, and correlation.
Asset Pricing Models5 min
This section details the formulas for the Capital Market Line (CML) and the Capital Asset Pricing Model (CAPM). These models establish the relationship between risk and expected return. The CML uses standard deviation as the measure of risk for efficient portfolios, while CAPM uses beta to price individual assets based on their systematic risk.

Key Points

  • CML uses standard deviation (total risk).
  • CAPM uses beta (systematic risk).
  • Beta is calculated as Covariance(i, mkt) divided by Variance(mkt).
  • Total risk equals systematic risk plus unsystematic risk.
Performance Evaluation Measures5 min
This section presents ratios used to evaluate investment managers. The Sharpe ratio and M-squared use standard deviation to adjust returns for total risk. The Treynor measure and Jensen's alpha use beta to adjust returns for systematic risk. These formulas allow investors to determine if a manager is generating excess returns relative to the risk taken.

Key Points

  • Sharpe ratio: Excess return per unit of total risk.
  • Treynor measure: Excess return per unit of systematic risk.
  • Jensen's alpha: Excess return above CAPM equilibrium.
  • M-squared: Risk-adjusted return comparable to market return.

Questions

Question 1

According to the holding period return formula, how is the return calculated if an asset pays a dividend during the period?

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Question 2

An investor buys a stock for 50 USD. At the end of the period, the stock is worth 54 USD and paid a 1 USD dividend. What is the holding period return?

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Question 3

Which formula represents the arithmetic mean return?

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Question 4

Calculate the arithmetic mean return for three periods with returns: 5 percent, 10 percent, and 15 percent.

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Question 5

The geometric mean return formula involves taking the n-th root of:

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Question 6

Given returns of +100 percent and -50 percent over two periods, what is the geometric mean return?

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Question 7

The correlation coefficient between two assets is calculated as:

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Question 8

If the covariance between Asset A and Asset B is 0.005, the standard deviation of A is 0.10, and the standard deviation of B is 0.20, what is the correlation?

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Question 9

In the standard deviation formula for a two-asset portfolio, the interaction term is:

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Question 10

If two assets are perfectly uncorrelated (correlation = 0), the third term under the square root in the portfolio standard deviation formula becomes:

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Question 11

Which component is NOT part of the portfolio standard deviation formula under the square root?

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Question 12

What is the equation of the Capital Market Line (CML)?

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Question 13

In the CML equation, the term [(E(Rm) - Rf) / sigma_m] represents:

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Question 14

If the risk-free rate is 2 percent, the market return is 10 percent, market standard deviation is 20 percent, and a portfolio standard deviation is 15 percent, what is the expected return using the CML?

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Question 15

According to the 'Formulas' page, total risk is defined as:

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Question 16

The formula for beta (beta_i) is given by:

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Question 17

An alternative formula for beta presented in the text involves correlation (rho). It is:

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Question 18

If the covariance of Asset A with the market is 0.03 and the variance of the market is 0.02, what is the beta of Asset A?

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Question 19

The Capital Asset Pricing Model (CAPM) equation calculates:

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Question 20

In the CAPM formula, the term [E(Rmkt) - Rf] is known as:

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Question 21

Calculate the CAPM expected return if Rf is 3 percent, Beta is 1.2, and expected market return is 8 percent.

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Question 22

The Sharpe ratio is defined as:

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Question 23

Which risk measure is used in the denominator of the Sharpe ratio?

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Question 24

If Portfolio A has a return of 15 percent, the risk-free rate is 5 percent, and the portfolio standard deviation is 20 percent, what is the Sharpe ratio?

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Question 25

The M-squared measure formula is given as:

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Question 26

In the M-squared formula, the term (sigma_M / sigma_P) serves to:

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Question 27

Calculate M-squared if: Rp=14 percent, Rf=2 percent, sigma_p=24 percent, sigma_m=12 percent, Rm=10 percent.

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Question 28

The Treynor measure formula is:

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Question 29

Comparison of Sharpe and Treynor measures: Sharpe uses ____ while Treynor uses ____.

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Question 30

Jensen's alpha is calculated as:

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Question 31

If a portfolio has a return of 12 percent, beta of 1.0, Rf is 4 percent, and Rm is 10 percent, what is Jensen's alpha?

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Question 32

Which performance measure represents the vertical distance between the portfolio's return and the Security Market Line (SML)?

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Question 33

In the standard deviation formula for a portfolio, w1 represents:

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Question 34

Calculate the portfolio standard deviation if w1=1.0, w2=0, and sigma1=0.20.

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Question 35

Which formula allows calculating the expected return of a portfolio based on the Capital Market Line?

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Question 36

If systematic risk is 5 units and unsystematic risk is 3 units, what is total risk according to the formula?

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Question 37

The geometric mean is usually ____ the arithmetic mean for a volatile series of returns.

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Question 38

Using the correlation formula, if sigma1 increases while covariance remains constant, the correlation:

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Question 39

Which of the following variables is NOT in the CAPM formula?

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Question 40

If a stock's holding period return is calculated as (P_t - P_0 + Div_t)/P_0, what does P_0 represent?

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Question 41

Calculate Treynor measure given: Rp=10 percent, Rf=2 percent, Beta=2.

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Question 42

What is the implied market risk premium if CAPM E(Ri)=10 percent, Rf=4 percent, and Beta=1.5?

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Question 43

If covariance between two assets is negative, the interaction term in the portfolio standard deviation calculation will be:

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Question 44

In the M-squared formula, if sigma_p equals sigma_m, then M-squared equals:

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Question 45

Which formula uses the concept of 'slope of the CML'?

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Question 46

Calculate the Geometric Mean of 1.10 and 1.21 (representing 1+R).

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Question 47

In the correlation formula, sigma_1 represents:

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Question 48

If a portfolio has zero systematic risk (beta=0), its CAPM expected return is:

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Question 49

Which formula involves adding back the risk-free rate to a risk-adjusted excess return?

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Question 50

In the context of the formulas provided, the term 'Div_t' refers to:

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